Identification and Analysis of Genuine and False Flos Rosae Rugosae by FTIR and 2D Correlation IR Spectroscopy
CAI Fang1,SUN Su-qin2,YAN Wen-rong1,NIU Shi-jie1,LI Xian-en1*
1. Institute of Medicinal Plant; Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 1000193, China 2. Department of Chemistry, Tsinghua University, Beijing 100084, China
Abstract：The genuine and false Flos Rosae Rugosae (Flos Rosae Chinensis and Flos Rosa multiflora) were examined in terms of their differences by using Fourier transforrn infrared spectroscopy (FTIR) combined with two-dimensional (2D) correlation IR spectroscopy. The three species were shown very similar in FTIR spectra. The peak of 1 318 cm-1 of genuine Flos Rosae Rugosae is not obvious but this peak could be found sharp in Flos Rosae Chinensis and Flos Rosa multiflora. Generally, the second derivative IR spectrum can clearly enhance the spectral resolution. Flos Rosae Rugosae and Flos rosae Chinensis have aromatic compounds distinct fingerprint characteristics at 1 617 and 1 618 cm-1, respectively. Nevertheless, Flos Rosa multiflora has the peak at 1 612 cm-1. There is a discrepancy of 5 to 6 cm-1. Flos Rosa multiflora has glucide’s distinct fingerprint characteristics at 1 044 cm-1,but Flos Rosae Rugosae and Flos Rosae Chinensis don’t. The second derivative infrared spectra indicated different fingerprint characteristics. Three of them showed aromatic compounds with autopeaks at 1 620, 1 560 and 1 460 cm-1. Flos Rosae Chinensis and Flos Rosa multiflora have the shoulder peak at 1 660 cm-1. In the range of 850-1 250 cm-1, three of them are distinct different, Flos Rosae Rugosae has the strongest autopeak, Flos Rosae Chinensis has the feeble autopeak and Flos Rosa multiflora has no autopeak at 1 050 cm-1. In third-step identification, the different contents of aromatic compounds and glucide in Flos Rosae Rugosae, Flos Rosae Chinensis and Flos Rosa multiflora were revealed. It is proved that the method is fast and effective for distinguishing and analyzing genuine Flos Rosae Rugosae and false Flos Rosae Rugosae (Flos Rosae Chinensis and Flos Rosa multiflora).
蔡 芳1,孙素琴2,闫文蓉1,牛世杰1,李先恩1* . 红外光谱法与药用玫瑰真伪的分析与鉴定[J]. 光谱学与光谱分析, 2009, 29(09): 2429-2433.
CAI Fang1,SUN Su-qin2,YAN Wen-rong1,NIU Shi-jie1,LI Xian-en1* . Identification and Analysis of Genuine and False Flos Rosae Rugosae by FTIR and 2D Correlation IR Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(09): 2429-2433.
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